Home / 20,531.36-30,797.87-6,491.66

Finding the Fourth Proportional to 20,531.36, 30,797.87 and 6,491.66

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Solution

The fourth proportional to 20,531.36, 30,797.87 and 6,491.66 is: 9,737.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.36 : 30,797.87 = 6,491.66 : x
  2. Step 2: Convert to fraction form
    20,531.36/30,797.87 = 6,491.66/x
  3. Step 3: Cross multiply
    20,531.36x = 30,797.87 × 6,491.66
  4. Step 4: Simplify right side
    20,531.36x = 199,929,114.32
  5. Step 5: Solve for x
    x = 199,929,114.32/20,531.36
  6. Step 6: Final answer
    x = 9,737.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.